9947798 has 8 divisors (see below), whose sum is σ = 17053392. Its totient is φ = 4263336.

The previous prime is 9947779. The next prime is 9947803. The reversal of 9947798 is 8977499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×9947798³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355265 + ... + 355292.

It is an arithmetic number, because the mean of its divisors is an integer number (2131674).

Almost surely, 2^9947798 is an apocalyptic number.

9947798 is a deficient number, since it is larger than the sum of its proper divisors (7105594).

9947798 is a wasteful number, since it uses less digits than its factorization.

9947798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710566.

The product of its digits is 1143072, while the sum is 53.

The square root of 9947798 is about 3154.0129993391. The cubic root of 9947798 is about 215.0679287792.

Subtracting from 9947798 its reverse (8977499), we obtain a cube (970299 = 99³).

The spelling of 9947798 in words is "nine million, nine hundred forty-seven thousand, seven hundred ninety-eight".